Checking/Adjusting Pressure Rollers - Grizzly G0866 Owner's Manual

Checking/Adjusting
Pressure Rollers
The pressure rollers have been adjusted at the fac-
tory and should not require routine maintenance.
Ideally, the pressure rollers should be positioned
slightly lower than the sanding drum. However,
we recommend verifying this setting. If the pres-
sure rollers are incorrectly adjusted, you can end
up with burned sanding belts, streaking, and poor
workpiece results.
Factory Settings
Pressure Roller Setting Below Bottom of
Sanding Drum ........................................... 0.035"
Tools Needed
6' Long 2x4 Cut in Half ...................................... 1
Open-End Wrench 15mm .................................. 2
To check/adjust pressure rollers:
1.
DISCONNECT MACHINE FROM
2.
Use jointer and table saw to cut 6' long 2x4
to uniform thickness then cut it in half. Place
one board along length of conveyor belt on
right-hand side, and place other board on left-
hand side, as shown in Figure 101.
Figure 101. Example of 2x4s placed on
conveyor belt under sanding drum.
3.
Open upper right access door and remove
V-belts from main motors and sanding drums
(refer to Changing V-Belts on Page 60 for
more information).
-58-
4.
5.
6.
7.
8.
9.
Qty
POWER!
10.
Outfeed
Infeed
Figure 102. Locations of pressure roller adjust-
Rotate a sanding drum by hand, and
ally raise table until you hear sandpaper just
contact surface of wood. DO NOT continue to
raise table beyond this point.
Close upper right access door.
Connect machine to power and make note of
workpiece thickness, then lower table 0.035".
This is how much lower infeed and outfeed
pressure rollers should be compared to sand-
ing surface of sanding drum.
DISCONNECT MACHINE FROM
Open upper left and right access doors.
Loosen infeed pressure roller jam nuts on
infeed pressure roller, rotate adjustment bolts
(see Figure 102) to lower infeed pressure
roller until it just touches
en jam nuts to secure.
Note: DO NOT continue to lower the pres-
sure roller beyond this point.
Repeat Steps 8–9 for outfeed and center
pressure rollers (see Figure 102).
Jam Nuts &
Adjustment Bolts
Left Side
Jam Nuts &
Adjustment Bolts
Right Side
ment components.
Model G0866 (Mfd. Since 11/18)
manu-
POWER!
boards, then retight-
Infeed
Outfeed